IP Library › Granted Patent US 5,882,545
Granted Patent Utility
US 5,882,545 · App. 08/648,293

Oxygen generating compositions

Inventors: Yunchang Zhang, James C. Cannon
Patented Case View Patent ↗
Granted: Mar 16, 1999 Filed: May 15, 1996
Inventors
Yunchang Zhang
James C. Cannon
Assignee (at issue)
NELLCOR PURITAN BENNETT LLC

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,882,545
App. No.
08/648,293
Filed
1996-05-15
Granted
1999-03-16
Kind
A